Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6349920 | Poppet valve shaping for quick valve opening | Stephen R. Lewis, Charles B. Looney, Wade J. Robel, Larry R. Mitzelfelt, Jr., David E. Martin +2 more | 2002-02-26 |
| 6029682 | Rapidly opening electromagnetic valve | Stephen R. Lewis, Charles B. Looney, Larry R. Mitzelfelt, Jr., David E. Martin, James D. Griffith +4 more | 2000-02-29 |